public class Test {
    public static void main(String[] args) {
        MySingleList mySingleList = new MySingleList();
        mySingleList.createList();
        mySingleList.addFirst(12);
        mySingleList.addFirst(23);
      mySingleList.display();
    //    System.out.println("长度:"+mySingleList.size());
      mySingleList.addIndex(1,199);
 //     mySingleList.display();
        System.out.println("========");
        mySingleList.removeAllKey(23);
        mySingleList.display();
    }
}
